Do you mean you are upgrading from Version 1 Release 2 to Version 2
    Release 4?  There is no Version 4 of OS/390.  Version 2 came out this
    past fall (release 4) and release 5 will be GA this spring.  Depending
    on which release you are upgrading to the best sources of info would be
    to review:
    *   the announcement letter for that release of OS/390
    *   the PSP bucket for that release of OS/390
    *   the PSP bucket for your release of ADSM

    ==========================
    I'm running ADSM server 2.1.9 on OS/390 v2.  We're getting ready to
    upgrade to OS/390 V4.   Does anyone know if there are any issues with
    ADSM running on OS/390 V4?  Any IBMers.. is ADSM certified for OS/390
    V4, or do you know the easiest way for me to find out?  Thanks..
    Julie